Updated 12 Aug 2018
IObit Advanced SystemCare
An excellent freeware registry cleaner and optimizer: IOBit's freeware registry cleaner, Advanced SystemCare is a comprehensive PC tune-up and registry optimizer geared towards users running the latest versions of Windows with support also for older versions like Windows XP and the upcoming Windows 8 release.
25.88 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
IOBit Advanced SystemCare Review - Download
Puran Utilities
A true all-in-one "swiss army knife" system maintenance and optimization suite: Puran Utilities is a collection of 24 different utilities designed to clean up and speed up your computer; it includes tools which can be described as clean-up, maintenance, security and registry cleaning.
9.88 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Puran Utilities Review - Download
The PC Decrapifier
Remove preinstalled junk in one fell swoop: Recently purchased a new PC or thinking of getting one?
1.28 MB | For Windows 7, Windows 8 / Vista / XPFree
The PC Decrapifier Review - Download
Remo MORE
If you've found yourself in a situation where your computer has slowed to a crawl, it may be time to start looking for some software to help optimize various components and services.
25.7 MB | For Windows 7, Windows 8 / Vista / XPFree
Remo MORE Review - Download
HD Cleaner
Cleans junk from your hard drive: HDCleaner clears the fixed disk and removes unnecessary file garbage from all available drives.
2.36 MB | For Free
CCleaner Portable
CCleaner is our system optimization, privacy and cleaning tool.
5.1 MB | For Windows 7, Windows 8 / Vista / XPFree
Duplicate Finder
Clean your PC of duplicate files: Duplicate Finder is a duplicate file cleaner which uses CRC32 or exact byte matches to find files on your PC which are exactly the same.
0.91 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Duplicate Finder Review - Download
DustBuster
DustBuster is a garbage file removing utility for Microsoft Windows operating systems.
299 KB | For Free
DustBuster Review - Download
Glary Utilities
A collection of powerful tools to optimize and clean your PC and improve its performance: We were very surprised to find a freeware utility like Glary Utilities which did so much without having the nag the user to upgrade to a full version.
8 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Glary Utilities Review - Download
Free Internet Window Washer
Free Internet Window Washer is a free privacy cleaner to remove internet tracks and computer activities.
1.24 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
JetClean
Provides tweaks and improvements for Windows and startup: CCleaner and Advanced SystemCare are two programs which many know.
3.45 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
JetClean Review - Download
ToolWiz Care
ToolWiz Care is a set of free-of-charge tools designed to speed up your PC and give your system a full range of care.
7.3 MB | For Windows 7, Windows 8 / Vista / XPFree
CCleaner
A must-have Swiss army knife, freeware system utility: Simply the best free registry cleaner, CCleaner supports both Windows 32-bit and Windows 64-bit.
2.9 MB | For Windows 7, Windows 8 / Vista / XPFree
CCleaner Review - Download
Windows CleanUp!
Windows CleanUp!
331.31 K | For Windows 7, Windows 8 / Vista / XPFree
Windows CleanUp Review - Download
MSConfig Cleanup
Effective software at removing junk from your MSConfig: MSConfig Cleanup is a small and lightweight program which can help you manage which programs start up with Windows on boot.
0.67 MB | For Windows 7, Windows 8 / Vista / XP / NTFree
MSConfig Cleanup Review - Download
Kingsoft PC Doctor
Feature-packed system diagnostics tool and optimizer: Freeware fans should be happy to learn that Kingsoft has released a bundle of applications which tune and optimize Windows.
5.32 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
PC Doctor Review - Download
Ashampoo WinOptimizer
Ashampoo WinOptimizer is an application designed to help users maintain, optimize and cleanup their system more easily without having to use multiple third party programs.
| For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPShareware
Ashampoo WinOptimizer Review - Download
Temp File Cleaner
Temp File Cleaner has a pretty basic task: To clean temporary files from your system that may be wasting space and in some cases, slowing down your entire system.
1.88 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Temp File Cleaner Review - Download
Duplicate File Finder
Duplicate File Finder (and we should add, deleter) is a freeware application developed by Auslogics and certainly one of the best freeware system cleaning applications featured on this site.
4.78 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Duplicate File Finder Review - Download
Ashampoo WinOptimizer
System optimization toolkit which can help improve performance by providing extra security and cleaning junk: WinOptimizer Platinum by Ashampoo is a complete and comprehensive set of utilities which keeps your Windows PC in top operating condition.
11.65 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPShareware
Ashampoo WinOptimizer Platinum 3 Review - Download
Wise Care 365
After using new advanced algorithms, Wise Care 365, designed to take care of your PC every day, makes itself stand out from the crowd in both features and appearances.
7.29 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
nLite
Every now and then, it can become a pain when you're having to deal with unwanted Windows components which are usually impossible or very difficult to remove.
2.5 MB | For Windows 7, Windows 8 / Vista / XPFree
nLite Review - Download
Baidu PC Faster
Provides several PC optimizations to improve PC performance and clean up Internet history: Baidu PC Faster is an advanced optimization and security application that makes your PC perform like new again using four cleaning modes and more than 300 cleaning checkpoints.
1.5 MB | For Windows 7, Windows 8 / Vista / XPFree
Wise Disk Cleaner
A PC system cleaning application with well thought-out features: Talk about useful!
2.39 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Wise Disk Cleaner Review - Download
AVG PC Tuneup
AVG PC Tuneup is an extensive tool which allows its users to completely overhaul their system in terms of performance.
56.0 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPShareware
AVG PC Tuneup Review - Download
WinUtilities Free
Very useful utility pack for Windows optimization: There are plenty of freeware utilities on the market which promise to clean your system and bring it up to par with something that you might see in the shoppes, but a lot of them fail miserably or only barely make your system perform better.
5.66 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
WinUtilities Free Edition Review - Download
Duplicate Cleaner
Duplicate Cleaner is a free utility which helps you keep your local and external hard drives free of duplicate files.
5.25 MB | For Windows 7, Windows 8 / Vista / XPFree
Duplicate Cleaner Review - Download
DriveCleanup
DriveCleanup removes all currently non present "Storage Volumes", "Disk", "CDROM", "Floppy" USB drives and their USB devices from the device tree.
28 KB | For Windows 7, Windows 8 / Vista / XPFree
WinTools Professional
A system cleaning application which aims to improve system performance: A suite of tools for increasing MS Windows operating system performance.
1.43 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPShareware
Avira System Speedup
Over time, any PC will accumulate hundreds of thousands of unseen and unnecessary processes.
2.5 MB | For Windows 7, Windows 8 / Vista / XPShareware
IObit Toolbox
IObit Toolbox is a free portable system maintenance application which can be run from a USB stick.
21.46 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
IObit Toolbox Review - Download
DiskMax
DiskMax is a small-ish utility which essentially deletes useless files left-over on your hard drive.
1.16 MB | For Windows 7, Windows 8 / Vista / XPFree
DiskMax Review - Download
My Duplicate File Finder
My Duplicate File Finder is a small and lightweight free program which can locate duplicate files quickly and efficiently by calculating MD5 hashes.
108 KB | For Windows 7, Windows 8 / Vista / XPFree
My Duplicate File Finder Review - Download
360Amigo
Whether you've owned your PC for a while or you've just purchased it to realize that it's completely filled with bloatware and useless applications, you might have realized that it is inherently slow.
6.17 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
SpeedItup Free Review - Download
Anti-Twin
Surely if you've had your PC long enough without a reinstall of Windows, you have a lot of various duplicate files laying around on your PC.
890 KB | For Windows 7, Windows 8 / Vista / XPFree
Anti Twin Review - Download
PC Health Optimizer
Freeware optimization utility: Featuring a set of 10 different tools in various areas, PC Health Optimizer (Free Version) will improve the performance of your Windows-based system by performing clean-up and optimization taks on the registry, your system memory, hard drives and more.
10.76 MB | For Windows 7, Windows 8 / Vista / XP / NTFree
PC Health Optimizer Free Edition Review - Download
Comodo System Utilities
Comodo System Utilities is a free suite of PC optimization utilities built and designed by the folks being the highly popular Comodo Antivirus and Internet Security suites.
12.9 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Comodo System Utilities Review - Download
System Ninja
System Ninja is a fast, powerful and effective system optimization solution for Windows XP, Windows Vista and Windows 7.
1.82 MB | For Windows 7, Windows 8 / Vista / XPFree
Cleano
Software which provides the option to either clean TEMP files at once or automatically on login: Cleano is a small Windows utility to clean temporary files immediately or on login.
0.18 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Free Disk Cleaner
GiliSoft Free Disk Cleaner is a quick and safe junk file cleaner.
0.14 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPAdware
Auslogics Registry Defrag
After you have run any type of registry cleaner, your Windows Registry will generally have empty spaces between keys which in turn makes your registry fragmented.
4.81 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Auslogics Registry Defrag Review - Download
Wise Disk Cleaner Portable
Wise Disk Cleaner can free up disk space by deleting junk files such as temporary files, log files, index files and backup files.
2.8 MB | For Windows 7, Windows 8 / Vista / XPFree
HDCleaner
HDCleaner is a completely free all-in-one system cleaning and optimization tool which separates all of its functions into 4 tabs.
6.8 MB | For Windows 7, Windows 8 / Vista / XPFree
HDCleaner Review - Download
Disk Cleaner
Disk Cleaner is an effective tool on your belt which helps reduce disk space usage caused by junk.
844 KB | For Windows 7, Windows 8 / Vista / XPFree
Disk Cleaner Review - Download
Argente Disk Cleaner
The typical PC user will normally accumulate a lot of useless temporary files just by using their computer.
2.16 MB | For Windows 7, Windows 8 / Vista / XPFree
Argente Disk Cleaner Review - Download
Zappit System Cleaner
Provides a number of tools for speeding up PC systems including removing browsing data and cleaning up temporary files: Zappit System Cleaner is a powerful software that cleans up and speeds up your computer.
1.43 MB | For Windows 7, Windows 8 / Vista / XPFree
CleanAfterMe
CleanAfterMe is a small and useful utility which cleans up all traces you have left behind after you've finished using a PC.
0.04 MB | For Windows 7, Windows 8 / Vista / XP / NTFree
CleanAfterMe Review - Download
Sweepi
Is your system slower and less efficient than it was before?
4.79 MB | For Windows 7, Windows 8 / Vista / XPFree
Auslogics Browser Care
Auslogics Browser Care is a program which was apparently created to improve Internet browser experience by providing a way to control how different browsers act.
7.3 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Auslogics Browser Care Review - Download
Norton PC Checkup
Norton PC Checkup is a free tool that Symantec offers you so you may check whether your computer is running at peak performance; of course, they also include a basic virus-scanner which checks your PC for malware or viruses.
11.6 MB | For Windows 7, Windows 8 / Vista / XPFree
Norton PC Checkup Review - Download